单选题：Questions are based on the following passage．In March 2012,

Questions are based on the following passage．
In March 2012, at a jewelry show in Switzerland, watchmaker Hublot unveiled whatnews reports hailed as the world's most expensive wrist watch--a timepiece ( 钟表计时器) entrusted with 1,282 diamonds, including six stones that weighed more than threecarats ( 克拉 ) apiece. It took 17 workers 14 months to set all the stones in the one-of-a-kind timepiece. The price tag? Five million dollars. The company's president, Jean-ClaudeBiver, told the reporter that it'd be hard to make a pricier watch than this one, given that "thesurface of a watch is limited" and there just isn't much room for more bling.
Hublot's over-the-top ( 奢侈的 ) watch is an elegant piece of wrist candy, to be sure,even if you wouldn't dare to wear it on the street without an armed escort. But if you'reconcerned about actually using a watch to tell time, this one probably isn't that great of achoice, since there's so much glitter on the face that the positions of the hour, minute andsecond hands are tough to discern. Also, there's no digital display and no stopwatch mode,so it wouldn't be very useful if you want to keep track of your pace when you go for ajog in the park. In comparison, a humble Timex Ironman T5E321, the sort of watch youcan purchase on Amazon.com for as little as $47, can do all of that and far more. It has aback-lit ( 背光 ) display that you can read clearly even at night, and if you're a traveler,you can set it to flip between two different time zones. In a pinch, it even can double as analarm clock.
But most importantly, the $5 million watch doesn't necessarily keep time moreaccurately than a $47 watch--at least to any degree you could discern. In a studypublished in Horological Journal in 2008, a researcher from the National Institute ofStandards and Technology used sophisticated scientific equipment to test the performanceof four cheap watches, including a counterfeit Rolex purchased from a street vendor for$15. He found that all four were astonishingly precise, to within a few thousandths of asecond per day.
So for strictly utilitarian ( 实用的) purposes, the answer to the question we'veposed is a simple "no". But "better" is subjective, and people pick watches for a lot ofother reasons besides telling time.
What do we know about the world's most expensive wrist watch? A．It was unveiled at a jewelry show in May 2012.
B．It was priced at five million dollars.
C．It was made by 17 workers for 14 years.
D．It was decorated with six diamonds.